Subtract 1/63 from 6/81
6/81 - 1/63 is 11/189.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 81 and 63 is 567
Next, find the equivalent fraction of both fractional numbers with denominator 567 - For the 1st fraction, since 81 × 7 = 567,
6/81 = 6 × 7/81 × 7 = 42/567 - Likewise, for the 2nd fraction, since 63 × 9 = 567,
1/63 = 1 × 9/63 × 9 = 9/567 - Subtract the two like fractions:
42/567 - 9/567 = 42 - 9/567 = 33/567 - After reducing the fraction, the answer is 11/189
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 12/81-1/63 6/81-2/63 18/81-1/63 6/81-3/63 30/81-1/63 6/81-5/63 42/81-1/63 6/81-7/63